Only Fireworks screensaver contains fireworks images. Big size high quality pictures (10 pictures in Demo version, 80 in Ultra version). Amazing transition effects (22 effects and special random mode.) Slide show starts with any picture. Setup time to show every image. Setup time for effects duration. Select image order (4 mode). Set current image as Desktop Wallpaper. Desktop Wallpaper Changer sets a new wallpaper every day.